How do I enable turbo boost for i7-4510

[mk.assasin2012]

I have a dell laptop Inspiron 15 - 7537 model.

Specs are:
CPU: i7-4510u
GPU: 750m (2GB)
RAM: 16GB
1TB SShd

My cpu has a speed of 2.0ghz but recently found out it has a turbo boost speed of 3.1 ghz. So how do i access this speed? Also is there any down sides of accessing this power?

Thanks in advance

 

[Dunlop0078]

Turbo boost should be enabled by default. So it should reach those speeds automatically, if the CPU is under load and temps allow.